Opc-Ua Architecture; Opc-Ua Server Configuration Data - GE 350 Communications Manual

OPC–UA ARCHITECTURE
OPC–UA Architecture
OPC-UA Settings
OPC–UA Server Configuration Data
5-2
The OPC communication is done through Client-Server architecture. In the case of the 350
relay, the relay is implemented as the Server.
The parts that are being supported are:
• OPC-UA DA
– Read and write actions of the data service. The data service deals with real-time
data, not historical data.
• OPC-UA AE
– Lecture events service.
• OPC-UA Methods
– Service commonly used for commands
OPCUA Enable
Range: Disabled, Enabled
Default: Disabled
The OPCUA Enable setting is only for a 350 relay with a communications Order Code 4.
In this case only, the OPC-UA and the IEC61850 protocol do not run simultaneously. If
IEC61850 is running by default but it is desired to use OPC-UA instead, the user must put
the OPCUA Enable setting to Enabled. Then, the relay must be rebooted. This will run the
OPC-UA instead of the IEC61850.
In the 350 relay with communications Order Code 5, this setting is not visible and both
protocols run simultaneously.
The servers internal configuration data are the following:
• OPC-UA connection port is 4842
• Maximum number of sessions per server is 2
• The server has the following data types:
– Double - used for Analog Values
– Boolean - used for Digital, Logic, Input and Output data
• The server guarantees the reading of 60 nodes. If the number of nodes is bigger than
this value, the response time increases proportionally to the number of nodes.
CHAPTER 5: 350 OPC–UA COMMUNICATION STANDARD
SR3 SERIES PROTECTIVE RELAY PLATFORM – COMMUNICATIONS GUIDE